In Vietnam, Mnong is spoken in the districts of Đăk Song, Đăk Mil, Đăk R'Lấp, Krông Nô, Gia Nghĩa, and other nearby locations in Đắk Nông Province (Nguyễn & Trương 2009).

According to Ethnologue, four major dialects exist: Central, Eastern and Southern Mnong (all spoken in Vietnam), and Kraol (spoken in Cambodia).

The Mnong language was studied first by the linguist Richard Phillips in the early 1970s.

[3][4] Lê, et al. (2014:234-235)[5] lists the following subgroups of Mnong and their respective locations.

The following comparative numerals from various Mnong dialects are from Nguyễn & Trương (2009).